<template>
  <button
    class="button"
    :type="type"
    :class="buttonClasses"
    :disabled="isDisabled || isLoading"
    @click="handleClick"
  >
    <spinner v-if="isLoading" size="small" />
    <emoji-or-icon
      v-else-if="icon || emoji"
      class="icon"
      :emoji="emoji"
      :icon="icon"
      :icon-size="iconSize"
    />
    <span v-if="$slots.default" class="button__content">
      <slot />
    </span>
  </button>
</template>
<script>
import Spinner from '@/yichat.web.share/components/Spinner'
import EmojiOrIcon from '@/yichat.web.share/components/EmojiOrIcon'

export default {
  name: 'WootButton',
  components: { EmojiOrIcon, Spinner },
  props: {
    type: {
      type: String,
      default: 'submit',
    },
    variant: {
      type: String,
      default: '',
    },
    size: {
      type: String,
      default: '',
    },
    icon: {
      type: String,
      default: '',
    },
    emoji: {
      type: String,
      default: '',
    },
    colorScheme: {
      type: String,
      default: 'primary',
    },
    classNames: {
      type: [String, Object],
      default: '',
    },
    isDisabled: {
      type: Boolean,
      default: false,
    },
    isLoading: {
      type: Boolean,
      default: false,
    },
    isExpanded: {
      type: Boolean,
      default: false,
    },
  },
  computed: {
    variantClasses () {
      if (this.variant.includes('link')) {
        return `clear ${this.variant}`
      }
      return this.variant
    },
    hasOnlyIcon () {
      const hasEmojiOrIcon = this.emoji || this.icon
      return !this.$slots.default && hasEmojiOrIcon
    },
    hasOnlyIconClasses () {
      return this.hasOnlyIcon ? 'button--only-icon' : ''
    },
    buttonClasses () {
      return [
        this.variantClasses,
        this.hasOnlyIconClasses,
        this.size,
        this.colorScheme,
        this.classNames,
        this.isDisabled ? 'disabled' : '',
        this.isExpanded ? 'expanded' : '',
      ]
    },
    iconSize () {
      switch (this.size) {
        case 'tiny':
          return 12
        case 'small':
          return 14
        case 'medium':
          return 16
        case 'large':
          return 18

        default:
          return 16
      }
    },
  },
  methods: {
    handleClick (evt) {
      this.$emit('click', evt)
    },
  },
}
</script>
